Despite popular belief, many cancers don't display obvious symptoms or cause pain until well advanced. Because early-stage cancer symptoms tend to be subtle, they can be mistaken for signs of other, less-threatening disease.
Some of the warning signs for cancer include:
Some of these symptoms are specific to certain types of cancer – for example, trouble with urination for prostate cancer or flu-like symptoms for acute leukemia. Don't be afraid to discuss any unusual symptoms with your primary care physician – and know that diagnostic tests are available for most common cancers -- and an early diagnosis greatly improves the odds of surviving cancer.